Hopefully this isn’t unwanted advice, but I have also cut out a lot of meat from my diet and I started getting weird side effects. (Lost feeling in my hands and feet, got dizzy a lot, felt extra stupid.)

After seeing a doctor, I take vitamin B and D supplements and it helped a lot. If you can’t see a doctor, you might consider trying some vitamin B and seeing if that helps. Apparently lots of vegetarians and vegans take it too.